1983 honda goldwing interstate. Sat for 2 years inside. New battery fully charged. Removed starter. Spins freely with battery. Mounted it just clicks and smokes the positive cable. Have cleaned the connection to bright metal. I assume the engine is froze? Have filled cylinders with blaster rust removal. Is it possible to turn the engine by hand? On center stand and i can turn back wheel easily in any gear? Oil has been drained but haven't added oil yet. Is this a safety feature and won't allow engine to turn?